Chain closing link

Abstract

A chain-closing link for a bicycle chain including two closing parts. Each of the closing parts includes a closing plate having a retaining opening and a displacement region. Each of the closing parts also includes a chain pin. The closing plate includes a recess and/or a hole having a securing region.

The invention claimed is: 
     
       1. Chain-closing link for a bicycle chain, comprising:
 two closing parts each comprising:
 a closing plate having a first end region, a second end region, a connecting region between the two end regions, and a long hole, the long hole comprising an insertion opening, a retaining opening and a displacement region located between the insertion opening and the retaining opening, is arranged in the first end region of the closing plate, wherein the displacement region narrows from the insertion opening in a direction of the retaining opening and forms a narrowed neck location, and 
 a chain pin connected in a rotationally fixed manner to the closing plate, the chain pin having at one end a pin head with a pin neck at one end and has a pin foot at an other end, 
 
 wherein a diameter of the insertion opening is larger than a diameter of the pin head, a diameter of the retaining opening is smaller than the diameter of the pin head and larger than a diameter of the pin neck, and the narrowed neck location is dimensioned to be smaller than the diameter of the pin neck, and 
 wherein a clamping region is arranged between the narrowed neck location and the retaining opening of the long hole and is dimensioned to be smaller than the diameter of the pin neck, such that in an end position the pin would be retained in a play-free manner. 
 
     
     
       2. Chain-closing link according to  claim 1 , wherein the clamping region is formed by two clamping slopes which are located opposite one another and run in a non-parallel state in relation to one another. 
     
     
       3. Chain-closing link according to  claim 2 , wherein in the end position the pin head butts against the two clamping slopes and against a periphery of the long hole. 
     
     
       4. Chain-closing link according to  claim 1 , wherein the long hole has in its displacement region a ramp, along which the pin head slides by way of its underside when the chain-closing link is being assembled, and the ramp slopes up in the direction of the retaining opening. 
     
     
       5. Chain-closing link according to  claim 1 , wherein the closing plate is of asymmetrical design relative to its longitudinal axis. 
     
     
       6. Chain-closing link according to  claim 5 , wherein the connecting region of the closing plate has a concave peripheral region and a less concave or non-concave peripheral region. 
     
     
       7. Chain-closing link according to  claim 6 , wherein the non-concave peripheral region is designed in the form of a convex peripheral region or in the form of a rectilinear peripheral region. 
     
     
       8. Chain-closing link according to one of  claim 5 , wherein a longitudinal axis of the long hole runs obliquely in relation to the longitudinal axis of the closing plate. 
     
     
       9. Chain-closing link according to  claim 8 , wherein the longitudinal axis of the long hole runs at an angle of 5 degrees to 25 degrees in relation to the longitudinal axis of the closing plate. 
     
     
       10. Chain-closing link according to  claim 9 , wherein the longitudinal axis of the long hole runs at an angle of 15 degrees in relation to the longitudinal axis of the closing plate. 
     
     
       11. Chain-closing link according to one  claim 1 , wherein the connecting region of the closing plate has a recess. 
     
     
       12. Chain-closing link for a bicycle chain, comprising:
 two closing parts each comprising:
 a closing plate including a first end region, a second end region, a connecting region between the two end regions, and a slot arranged in the first end region, the connecting region of the closing plate including a concave peripheral region and a non-concave peripheral region, and the slot comprising an insertion opening, a retaining opening and a displacement region located between the insertion opening and the retaining opening, wherein the displacement region narrows from the insertion opening in a direction of the retaining opening and forms a narrowed head location and/or a narrowed neck location, and 
 a chain pin connected in a rotationally fixed manner to the closing plate, the chain pin having at one end a pin head with a pin neck and at the other end a pin foot, 
 
 wherein a diameter of the insertion opening is larger than a diameter of the pin head, a diameter of the retaining opening is smaller than the diameter of the pin head and larger than a diameter of the pin neck, and the narrowed head location is dimensioned to be smaller than the diameter of the pin head and/or the narrowed neck location is dimensioned to be smaller than the diameter of the pin neck, and 
 wherein the connecting region of the closing plate has a recess. 
 
     
     
       13. Chain-closing link according to  claim 12 , wherein the non-concave peripheral region is designed in the form of a convex peripheral region or in the form of a rectilinear peripheral region. 
     
     
       14. Chain-closing link according to  claim 12 , wherein a longitudinal axis of the slot runs obliquely in relation to the longitudinal axis of the closing plate. 
     
     
       15. Chain-closing link according to  claim 14 , wherein the longitudinal axis of the slot runs at an angle of 5 degrees to 25 degrees in relation to the longitudinal axis of the closing plate. 
     
     
       16. Chain-closing link according to  claim 15 , wherein the longitudinal axis of the slot runs at an angle of 15 degrees, in relation to the longitudinal axis of the closing plate. 
     
     
       17. Chain-closing link according to  claim 12 , wherein a securing region is arranged between the narrowed head location and the retaining opening of the slot and is dimensioned to be smaller than the diameter of the pin head, and/or a securing region is arranged between the narrowed neck location and the retaining opening of the slot and is dimensioned to be smaller than the diameter of the pin neck. 
     
     
       18. Chain-closing link according to  claim 17 , wherein the securing region is formed by two clamping slopes which are located opposite one another and run in a non-parallel state in relation to one another. 
     
     
       19. Chain-closing link according to  claim 12 , wherein the slot has in its displacement region a ramp along which the pin head slides by way of its underside when the chain-closing link is being assembled, wherein the ramp slopes up in the direction of the retaining opening.